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Anyone know number 4?
1 answer:
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Answer:
Potential energy, E = 25 mgh
Explanation:
Given that,
Mass of the object, m = 5 m
It is lifted to a height of, h = 5 h
It is required to find the potential energy gained by the object. It is given by the product of object's mass, acceleration due to gravity and heigh above ground. It is given by :
E = 25 mgh
So, the potential energy gained by the object is (25 mgh). Hence, this is the required solution.
Answer:
μ = 0.436
Explanation:
Given:
Change in diameter, ΔD = 7 × 10⁻³ mm
Original diameter, D = 11.2 mm = 11.2 × 10⁻³ m
Applied force, P = 14100 N
Cross-section area of the specimen, A = =
Now,
elongation due to tensile force is given as:
or
on substituting the values, we get
or
where,
is the strain in the direction of force
Now,
now, the poisson ratio, μ is given as:
on substituting the values we get,